ES329179A1 - Procedure for the manufacture of phosphoric acid and calcium sulfate hemihydrate via via humeda. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the manufacture of phosphoric acid and calcium sulfate hemihydrate via via humeda. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES329179A1 ES329179A1 ES0329179A ES329179A ES329179A1 ES 329179 A1 ES329179 A1 ES 329179A1 ES 0329179 A ES0329179 A ES 0329179A ES 329179 A ES329179 A ES 329179A ES 329179 A1 ES329179 A1 ES 329179A1
- Authority
- ES
- Spain
- Prior art keywords
- calcium sulfate
- gypsum
- phosphoric acid
- translation
- manufacture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title abstract 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 title abstract 2
- 239000010440 gypsum Substances 0.000 abstract 5
- 229910052602 gypsum Inorganic materials 0.000 abstract 5
- 235000011007 phosphoric acid Nutrition 0.000 abstract 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 229910019142 PO4 Inorganic materials 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 150000004683 dihydrates Chemical class 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 235000021317 phosphate Nutrition 0.000 abstract 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 abstract 1
- 150000003016 phosphoric acids Chemical class 0.000 abstract 1
- 238000001953 recrystallisation Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B11/00—Calcium sulfate cements
- C04B11/26—Calcium sulfate cements strating from chemical gypsum; starting from phosphogypsum or from waste, e.g. purification products of smoke
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/18—Phosphoric acid
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Special Chairs (AREA)
Abstract
Process for the manufacture of phosphoric acid and calcium sulfate hemihydrate by wet process, by means of the attack of natural phosphates by a mixture of sulfuric and phosphoric acids, with initial production of a gypsum paste dihydrate which contains, mainly, phosphoric acid and gypsum, characterized in that the gypsum paste provided by said attack is continuously mixed with concentrated sulfuric acid, heating the mixture, if necessary by the contribution of external calories, to create in it conditions in which the hemihydrate is the stable form of crystallization of calcium sulfate, in order to recrystallize the gypsum continuously in hemihydrate which is then separated from the pulp, said conditions comprising: A temperature of 70 to 90º C, preferably 75 to 85º C; a concentration in P2O5 of the liquid of 15 to 35%, preferably 20 to 30%; a concentration in H2SO4 of the liquid of 2 to 25%, preferably 10 to 20%, and a flow rate of treated gypsum slurry per hour of approximately 0.5 to 1.5 times the volume of the recrystallization vessel. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU49007 | 1965-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES329179A1 true ES329179A1 (en) | 1967-05-01 |
Family
ID=19724362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0329179A Expired ES329179A1 (en) | 1965-07-07 | 1966-07-06 | Procedure for the manufacture of phosphoric acid and calcium sulfate hemihydrate via via humeda. (Machine-translation by Google Translate, not legally binding) |
Country Status (16)
| Country | Link |
|---|---|
| AT (1) | AT269064B (en) |
| BE (1) | BE683739A (en) |
| BG (1) | BG20319A3 (en) |
| DE (1) | DE1567821B1 (en) |
| DK (1) | DK130955B (en) |
| ES (1) | ES329179A1 (en) |
| FI (1) | FI47652C (en) |
| FR (1) | FR1485940A (en) |
| GB (1) | GB1111078A (en) |
| IL (1) | IL26076A (en) |
| LU (1) | LU49007A1 (en) |
| NL (1) | NL6609093A (en) |
| NO (1) | NO116287B (en) |
| OA (1) | OA02091A (en) |
| SE (1) | SE336775B (en) |
| SU (1) | SU378002A3 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3984525A (en) * | 1967-02-01 | 1976-10-05 | Albright & Wilson Limited | Manufacture of phosphoric acid |
| FR2171861A1 (en) * | 1972-02-11 | 1973-09-28 | Cerphos | Phosphoric acid prodn - with wet screening of digester product |
| DE2233189C2 (en) * | 1972-07-06 | 1986-06-26 | Ruhr-Stickstoff Ag, 4630 Bochum | Process for the production of pure calcium sulfate hemihydrate |
| US4059674A (en) * | 1972-07-18 | 1977-11-22 | Pullman Incorporated | Method for manufacturing phosphoric acid and gypsum |
| SE440069B (en) * | 1982-12-22 | 1985-07-15 | Boliden Ab | PROCEDURE FOR RECYCLING GYPS |
| EP0226690B1 (en) * | 1985-12-23 | 1992-03-11 | Société Chimique PRAYON-RUPEL Société Anonyme | Process for the treatment of alpha calciumsulfat hemihydrate and the obtained product therefrom |
| BE1016065A3 (en) * | 2004-06-01 | 2006-02-07 | Prayon Technologies | Process phosphoric acid production. |
| BE1019055A3 (en) | 2009-12-02 | 2012-02-07 | Prayon Technologies | PROCESS FOR PRODUCING PHOSPHORIC ACID |
| JP5798241B2 (en) | 2011-06-01 | 2015-10-21 | プレイオン テクノロジーズ | Method for producing phosphoric acid of dihydrate / hemihydrate type |
| CA2852131C (en) | 2011-10-24 | 2019-04-30 | Hydrometal Sa | Method for treating phosphate rock |
| CN104528798A (en) * | 2014-12-16 | 2015-04-22 | 中国科学院青海盐湖研究所 | Method for purifying low-grade natural gypsum or gypsum tailings by recrystallization |
| DE102016212242B4 (en) | 2016-07-05 | 2019-02-07 | Technische Universität Bergakademie Freiberg | Process for the production of phosphoric acid from phosphorus-containing primary and secondary raw materials |
| CN111807340B (en) * | 2019-04-10 | 2023-07-21 | 中石化南京工程有限公司 | Semi-water-dihydrate phosphoric acid production device and method |
| BE1032252B1 (en) | 2023-12-20 | 2025-07-22 | Prayon | PROCESS FOR PRODUCING PHOSPHORIC ACID |
| BE1032259B1 (en) | 2023-12-21 | 2025-07-23 | Prayon | METHOD FOR DETERMINING THE FEASIBILITY OF PRODUCING A PHOSPHORUS-BASED PRODUCT FROM A PHOSPHATE SOURCE |
-
1965
- 1965-07-07 LU LU49007D patent/LU49007A1/xx unknown
-
1966
- 1966-06-30 FR FR67756A patent/FR1485940A/en not_active Expired
- 1966-06-30 DE DE1966S0104558 patent/DE1567821B1/en not_active Withdrawn
- 1966-06-30 NL NL6609093A patent/NL6609093A/xx unknown
- 1966-07-01 GB GB29568/66A patent/GB1111078A/en not_active Expired
- 1966-07-01 NO NO163756A patent/NO116287B/no unknown
- 1966-07-01 OA OA52506A patent/OA02091A/en unknown
- 1966-07-01 IL IL26076A patent/IL26076A/en unknown
- 1966-07-04 BG BG6676A patent/BG20319A3/xx unknown
- 1966-07-04 FI FI661783A patent/FI47652C/en active
- 1966-07-05 AT AT639966A patent/AT269064B/en active
- 1966-07-06 BE BE683739D patent/BE683739A/xx unknown
- 1966-07-06 ES ES0329179A patent/ES329179A1/en not_active Expired
- 1966-07-06 SU SU1090097A patent/SU378002A3/ru active
- 1966-07-06 SE SE09245/66A patent/SE336775B/xx unknown
- 1966-07-07 DK DK353066AA patent/DK130955B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK130955C (en) | 1975-12-29 |
| GB1111078A (en) | 1968-04-24 |
| SE336775B (en) | 1971-07-19 |
| AT269064B (en) | 1969-03-10 |
| IL26076A (en) | 1970-07-19 |
| OA02091A (en) | 1970-05-05 |
| FI47652B (en) | 1973-10-31 |
| NL6609093A (en) | 1967-01-09 |
| BG20319A3 (en) | 1975-11-05 |
| FR1485940A (en) | 1967-06-23 |
| DE1567821B1 (en) | 1971-08-12 |
| BE683739A (en) | 1967-01-06 |
| NO116287B (en) | 1969-03-03 |
| SU378002A3 (en) | 1973-04-17 |
| FI47652C (en) | 1974-02-11 |
| LU49007A1 (en) | 1967-01-09 |
| DK130955B (en) | 1975-05-12 |
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